Title :
Tunable composite right/left-handed leaky wave antenna based on a rectangular waveguide using liquid crystals
Author :
Damm, C. ; Maasch, M. ; Gonzalo, R. ; Jakoby, R.
Author_Institution :
Fachgebiet Mikrowellentech., Tech. Univ. Darmstadt, Darmstadt, Germany
Abstract :
A leaky wave antenna based on a composite right/left-handed waveguide structure is presented. The antenna features beam steering capabilities for a fixed operation frequency of 7.6 GHz. The frequency independent tunability is obtained by inclusion of liquid crystal (LC) material whose dielectric properties can be tuned by static external electric or magnetic fields. Simulations as well as measurements of a built prototype are shown for scattering parameters and far field patterns. The maximum obtained beam tilt amounts to ±10° around broadside.
Keywords :
beam steering; leaky wave antennas; liquid crystals; rectangular waveguides; beam steering; frequency 7.6 GHz; frequency independent tunability; liquid crystals; rectangular waveguide; static external electric field; static external magnetic fields; tunable composite right/left-handed leaky wave antenna; Beam steering; Crystalline materials; Frequency; Leaky wave antennas; Liquid crystals; Liquid waveguides; Magnetic field measurement; Magnetic liquids; Magnetic materials; Rectangular waveguides; Artificial transmission line; beam steering; composite right/left-handed (CRLH); leaky wave antenna (LWA); liquid crystals (LC); metamaterials;
Conference_Titel :
Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4244-6056-4
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2010.5518096
